Brush machine



Feb@ -28, 1933.

C. JOBST BRUSH MACHINE Filed Sept. 2, 1930 4 Sheets-Sheet l BY fmm ALMrmwM-M,

ATTORN EY'S Feb. 28, 1933. C, JQBST .1,899,694

BRUSH MACHINE m "chg,

Q INVENTQR @ma .Z .z/:Zs

ATTORNEYS Feb. 29,119.93..v I c. 'JOBST 1,899,694

BRUSH MACHINE Filed sept. 2, 1930 4 sheets-sheet s we Wfl/lfm" INVENTCR(mma ffs M22-...mmm f 7W@ ATTORN EY'S Feb./' 28. 1933.

C. J OBST BRUSH MACHINE Filed sept. 2. 1930 4 Sheets-Sheet 4 INVENTOHATroRNEY Patented Feb. 28, 1933 Y ED STA ePrice YCONRAD JoBsT, OFTOLEDO, OHIO, AssIGNoRfTOT-'HE TOLEDO AUTOMATIcfDnU-SH`1\:Ae1111\mCOMPANY, OF TOLEDO, OHIO, A CORDOBATIONOFTOHIO BRUSHMAeHIN-E Application mea septemberfa, i930. ,senat :165479,3'72.

The invention. relates to brush machines :tuft settingnezle tvillfalwaysdeliverthek and more particularly to machines for formtutt'intoithejho-le previously bored 2inthe ing brushes having closely spacedbristle tufts back. j

. mounted in thin backs such for instance as The co'nstru-ctienxef each`of 'the drilling,

5 tooth brushes. It is the object ofthelinventuftfsetti ng7 andtrimmingmeclian'isms per. .55

tion to automatically complete the brush after se 'is rieti essential tothe preseritzinventin a single setting of the back or handle. This whichis adaptedffor u sewith any. suitable necessitates the Vdrilling ofthehfoles for recombination of such mechanisms.arrangedin ceiving thetufts, the setting ofthe tufts operative relation' to my improvedwrkhord- 310 therein and the trimming of the bristles to ing and feedingunit, and the invention there- W any Vdesired contour, bothlongitudinally and 'fore consists. in tl'iefnovelf construction, farf'transversely of the back, all of said vope'rarangement Yand combinationofparts constitions being performed automatically 'in tutingthisv unitas hereinaftersetforth.

proper sequence. Y y1n the drawings: l 23315 In the development of theart machines Figure I is va4 vertical central section 65 have beendevised in which the boring ofe'ne 'through the machine; f brush backand the setting of tuftsin a pre- Figure la is ase'ctiOnal detailed-viewof a viously bored back are'simultaneously Vac portinofFigurefh vcomplished. Machines of this type When Figure 2 isa plan viewipartlyinsectin; [3320 used formanufacturing brushes with cellu- Figure y3 iis`an end e.levati'oli;v 70

loid backs were limited in speed by the length .Figure 4 is a verticalsection on Vline 4 4.- 'i of the time interval required Ofor boringofFigur'eQ; Aeach hole in such'material. In further de- Figure Ela/is*an'elevation vievv'etiatfri'ght velopment of the art, advance'in thespeed anglesto:Figure''shovviiigfthefexigagnnt 15325 of forming andlsetting the tufts'rendere'dl it ofjntlier roller with thestepped cam;75

desirable to segregate the boring and tuft 'Fi'gure'isan;elevation:shoyvirigineansjfor setting operations, inasmuch as thespeedof engaging `and releasing "the ybrush back the latter mustnecessarily be limited bythat clalfnps;` of the former. However, withimprovement .Figure 6 isan elevation partly in section of fj 15; 30 inmaterials for drills it has become possible the mens'contilliig therotative'llovl'ent ,80

to increase the speed of the drilling operaofthefdrum;

tion so as to equal that of the tutt setting Figur Z is a sectional'elevation vat mechanism, but to successfully operate 'at'angles'to:Figuret;` such high rate of speed requires eXtreme ae-FigureS is ,avertical section through the ggg 35 curacy in registration.controllingvvalvemand h i The present invention comprises` essentiallyFigure ,91 isf an end elevatien;` thereof. a construction of Workholding and feeding `.Generally described, fniy improved A'niaunit Withwhich brush backs may be easily Chine comprises a 'rotary" an`d axiallyengaged and by which these'backs are vsuc- Vable'druin lizwingvsecure'dfto'theperiphery 53:40 cessivelypresented to the drilling, thetuft 'thereof arserieszof fb'rushback 'hO'ldersto- 9o setting and thetrimming units and with such gfetliei'H with ,clamping faud releasing"nieiins extreme accuracy of registration as to permitperinittingoftheintrar iictiln; anilr nival of operating at a very highrate ofspeed. ofthe Work, VThis 'is irotatively The construction is alsoone which is adapted i'nount'edV on aninnfer holl'oyv'f `melIiieifiljier 45 for use withbrush backs of various shapes 2 Whi'ehfhasitslup'perjed "arecessf''vvith 95 and kdesigns, such as either plain orcurved 'the 'ball b'eafringsitjand'jlocated therein.

y faces and with the tufts set either inl straight` ,The drumilliasatop' head vitiia eli v4parallel rows or otherwise'distributed.'`Vith ing "TOr engaging fsaillballjbearlngs 4 every adjustment of thiskind there willlbe 'land 5. Intermediatef'tlie diuin land 'the gig; 50the same 'accuracy of registration'so that the frame Q .isanannular-framedvvlii'cli has: dis- V100 respect to the frame 8 and africtionlessV Yrotary'movement of the drum lwith respect to theframes2'and 8.

yThe frame 8 has a shelf portion 8a which is horizontally adjustablymounted Aonr` a member 13 which is in fixed4v relationy to the drilling,tuft setting 'and trimming units (not shown). To permit of suchadjustment the frame 8: and member 13 are provided with 'registeringracewaysV 14 and 15 with ballsl ,lltherebetweem so that the movement isl'comparatively frictionless. Journaled upon the. frame 8 andbetweenthesame and the A.druml 1 is a rotary cam carrier 17 which hassecuredthereto an annular bevel gear 18 .intermeshing with a bevelpinion 19 on a shaft v2O. This shaft isdriven through the ,medium yofchangev gears ,21 from a parallel shaft 22 which A:orturn is driventhroi'igh bevei gear wheels 23 from a -power shaft 24.v` A.V verticalshaft 25 is also vdriven from this power shaft through the bevelgearfwheel,

26 to which it is splinediso as to permit of axial'fmovement inrelationV thereto. The

lower end of the shaft 25 is coupled by bevel4 gear wheels 27 withhorizontal shaft 28 mounted on a ,lateral Vextension 29 of the frame 2.A shaft 30 isV axially aligned 'with the shaft 28 and between theseshafts is a friction coupling 31 through which a limited i torque lis.transmittedv from the shaft 28 to 32 which :extendsupward between theframev the shaft 30. The shaft 3Q is connected by bevel gear wheels31with a vertical shaft 2 and the frame Sand has at its upper end a`vpinion v33j in mesh with. a ring gear 34 securedto the under `'side'of`the head 6- of the drum 1. The Varrangement is such that the rotarymotion ofthe power shaft 24 is I communicated through Vthe'shafts 25,28, 30`

and327 pinionl 33 and ring gear 34 to impart a rotary motion to the drum`1 which, however, is not positive as the friction clutch 3 1willfpermit of arresting' movementof thel drum as will be hereinafterexplained. The

f power shaft' 24 also drives the cam carrier 17 thi ough the medium ofthe vbevelgears23, .shaftl 22, change gears'f21, shaft 2Q, .bevel ifpinion 19 and ring gear 18', the rotation of said cam'carrierf beingproperly" timed by `fthe change vgearsto correspond to the parv'f 'upperenda stepped cam 35 engaging a rollticula'r` character of vwork tobeperformed.

Thel cam carrierY 171 has mounted lo n its #er 36` mounted -on a radialextension 37`of the frame 2 which-extension passes through aslot 38 intheframe 8.v The steps on this cam are lin. ascending and descendingseries `carrier 17 has mounted thereon a seriespoi correspondingto theseveral rows of tufts and the number of individual tufts in each row. Ifthe number of rows in each brush back is odd, then the cam is providedwith at least double that. number of ascending and descending portions,so that after a compiete cycle the starting point will be in the vsameposition.

' -In addition to the stepped cam 3 5 the cam peripheral cams forperforming various functions. One of these cams 36?l is adapted tocooperate with a rollerfbearing 37a on an arm-38EL extending from thestationary frame 13. The purpose of this cam is to move the frame8 andall of the parts mounted thereon in relation to the fixed frame and thedrilling, tuft setting and trimming units, in case. the brush back has acurved instead of a pla-in face. On the other hand, where the brush`back is flat the cam 36 may be concentric with the aXis of the drum soas to impart no movement to the frame 8 relative to the frame 13. A. rod39 and spring 40 forms a yieldable con-y nection between the vframe 8and' armk 38B; thereby holding the cam 36 constantly bearingagainst theroller 37.

The stepped cam in cooperationwith the roller 36 will intermittentlyraise and` lower the frame 2 but willhave no effect upon rotary-movementof the drum l. This rotary movement as previously described is comniunicated to the drum by the pinion 33 engaging the ring gear 34, butthe driving is not positive due to the friction coupling 31 between theshafts 28 and 30. To hold the drum from rotation against this yieldingdrive it is provided near its lower'end with an. exchangeable ringv 41having an outwardly` eXp-1 tending flange 42 provided vwithspacednotches 43, corresponding to the spacing of the several rows of tufts ineach brush and the spacing between adjacent brushes. This ring 41 may beexchanged for another whenever the number of rows of tufts in thebrushes operated upon is changed.y The ynotches 43 are successivelyengaged by aver- `.tical V-shaned guide member 44 which is of a lengthgreater than the vertical movements ofthe drum and is intermittentlyradially Withdrawn to permit the rotation of said drum under theactuation of its friction drive.

' Such radial withdrawal is timed by the operation of trip members 45suitably rotatively spaced around the cam carrier 17 andv cooperatingwith mechanism constructed as follows:

The guide 44 is mounted upon a bifnrcated` Y arm. 4G which is pivotallyrconnected by the shaft 47 with a bifurcatedlever arm48 fulcrumed upon avertical pivot shaft or4 post 49 mountedon the shelf 8a. On this samepivot shaft 49 is fulcrumed an arm 50 which extends into` proximity tothe varm 46 and bears against an adjustable stop 51 on said arm.' Aspring 52 engaging a bell crank arm 53' connected to the arm 46 andanchored to a post 52a serves to' yield'ably hold the guide notch 43'.The arm 50 is almostinstaiitly rev Vleased by the passage of the memberbeyond the member so that the guide 44 will again be' moved inward bythe tension of the spring 52. However, in this brief interval suiicientmovement will be' imparted to the steps the drilling and tuft sett-ingmecha drum 1 to pass from one notch 43' into registration with another.

As just described, the guide 44 will hold the drum from rotation duringits upward or downward step by step-movement actuated by the stepped cam35. At each of the nisms will operate to respectively drilla'hole in abrush back and toset aV tuft in the corresponding hole of a previouslylbored back. Also by properly positioning the trips 45 the guide 44 isWithdrawn at the completion of each row of holes and tufts tobe?engagedV with the iiextjnotch 43 in whichy positionthe drillingand'tuft setting mechanisms successively operate upon another row. Thusthe'tWo rows will be exactly parallelv to each other and consequentlythe tufts in each row WillV be'spaced a uniform distance apart. It is,however, frequently desirable to have the rows of tufts non-parallel,which vI accomplish in the following manner.

It has been stated that the arm 46 is piv- 'otall}7 connected to a lever48 which is fulcrumed upon the pivot 'shaft' 49. At the opposite end ofthis lever 4S'is a roller 57 which bears against a cam 58 on the' camcarrier 17.

The camV 58 is so fashioned as to gradually rock the' lever 48 on itsfulcrum 49 and in' so doing` move the pivot 47 to which the arm 46 isattached. This will changethe position of the guide 44 so that the drum1 instead'l of being held from rotation is permitted toslightly'rotatea-nd thus tochaiige the path ofthe british backs operatedupon from an exact vertical line to' van inclined orcurvedI line. Thispath can be exactly predetermined by properly fashioningthe cam 58 sothat any desired inclination or curvaturecan be given to the rowswithout the necessity of changing f the` guide 44.'

In the lmamifacture of brush backsffroni materials such as celluloid ityhas been found impractical to hold theseV backs to exact di' mensions,.particularly `as to thickness. .'Iherefore, if the brushbaok ispositioned in its holder' by the back side, the .front side which is=operated upon bythe drilling and tuft" settiiig mechanisms may vary in,posi-'f tion* according to thethickness of the indiv-idiiaflv backs.

Tov `avoid the inaccuracy which would result from this variation, I havedeviseda` construction where each back is positioned' in relation to itsfront lor boredv andtuftedl face, instead of'being located by the rearface. It is however, veryessential that the backfshould be rigidly heldduring thedrilling and tuftingoperations, particu-` larly against theimpact ofthe driver which` sets' the' tuftsv so that the IHOUHUS in :the

' holder can not be of a yielding nature. This I' have accomplished by aholder 'of the following construction: Y

width somewhat greater than the width of the brush back and which haveat their outer `ends flanges 60 Vwhich slightly overlap the back. Inleach of these channels is a floati ing wedge member 61 which hasat itslower end a laterally extending finger 62 extending beneath the channelportion of the member 59 and between t-he same and an annular flange 63,thereby holding said wedge member fromJ disengagement but permittingitto move radially in the channel. 64 is a cooperating wedge memberwhich is oppositely tapered and fis located in rear of the wedg'e`member 61. wedge 64 has a radially inwardly extending flange 65'which atcertain points inthe movement of the' drum 1 will come into registrationwith an actuating member. As shownI in1 Figure 2 there' are two of theseactuating' members 66 and 67 located adjacent to different Vpoints, inthe orbit of the drum and vrespectively operatingV to press the wedgemember 64- downward for clamping the brush back and to lift said wedgemember to re' leasethe back., As specifically shown, the actuafto'rs66and 67are pneumatically operated andfrfe'ceive the' operating airthrough conduitis 68wl'i'ich connect with conduits 69 andi'4 7 0:concentrically arranged and passing through the center of the drum 1.The lower ends ofthe conduits 69 and 70 are connected toavallfvehousiiig 71 byY flexible conduits 71id locatedfon the frame 8 ina position to bein operative relation to a pair of cams 72 and 73onthe'cam carrier 17. The arrangement is such Tthat during the revolutionof Lthe cam carrier 1:7 the cams 72 and78l will at certa-in points'actuate the valves in thel housing 71`s'o as toadm'itor'exhaust air fromthe fpneumaticjac'tuators 66 and' 67. This will causethedepression ofthe wedge membe1""6`4 by one of these actuators and the lift Iing andwithdrawalof saidwedge member bythe other of said actuators. Thus assumThe upper end of the Secured to the periphery ofthe drum l are- 'the'channeledE holders 59 which are of a stem 84 sleeved on the stem 82. Thecams 7 2y `drum the flange 65 registers with the operator 66 the cam 72will simultaneously actuate valves in the valve casing 71. so as tocause said actuator to press the wedgek 64 downward moving outward thefloating wedge 61 and tightly clamping the brush back against the flange60. The angle of the wedges is such as to be within the angle offriction, so that when once clamped the wedgesremain in this positionuntil again actuated for releasing. The contacting surfaces are alsonon-parallel as for instance by convexing the surface of the member(S1-so that the point of bearing is intermediate the ends. Thus thesurface of themember 61 which bears against the brushl back willautomatically adjust itself angularly Vvto distribute the pressure. Therelease of the clamp is accomplished by the operator 67 at the time inthe rotation of the drum when the flange 65 comes into registrationtherewith.

The pneumatic motors and the actuators 66 and 67 may be of any suitableconstruction but as shown comprise a piston 73 in a cylinder 74 normallyheld in raised position by a light spring 7 5. A plunger 76 is held inguides 77 to extend parallel to the piston and cylinder and is providedwith an inwardlyl extending-lug 78 for engagingr the piston and anoutwardly extending lug 79 kfor engaging the flange 65 of the wedge 64,The actuators 66 and 67 are substantially the same in construction butwith their cylinders and pistons reversed Aand with the lug 79 of theactuator 66 above the flange 65 of the wedge and the lug 79 of theactuator 67 beneath the flange 65. These actuators may besupported on anarm or plate80 which extends radially from the outer tubular member 8Oaforming the conduit 70.

The valves in the casing 71 may be of any suitable construction but asshown two pairs of valves arranged one above the other, each and 73 onthe carrier 17 directly engage pivoted rock arms and 86 which arearranged to respectively engage the plunger 82 and the tubular plunger84. In this way each of the valves 83 and 81 can be independentlyactuated and timed and the arrangement is such that pressure air isadmitted to the cylinder by one and exhausted by theother.

On the left hand side of Figure 1v a holder 59a is shown which is thesame as the holder 59 but longitudinally curved `instead of beingstraight. This same curvature is in the flanges 60 and floating wedge 61so that alongitudinally curved brush back may be insert- .ed and heldtherein. t is to be understood that the construction shown at 59a is analternative for the construction of 59, the two not being used on thedrum at the same time.

Operation vIn the operationof the machine it will be understood that thedrilling mechanism, tuft setting mechanism and trimming mechanism arearranged in positions about the drum l to` be in operative relation tothe brush backs in the holders 59 betweenthe' points of `clamping by theoperator 66 and releasing by the operator 67. It will also be understoodthat these several mechanisms'are properly timedV ticular brushes to beformed and mounted on said carrier, and the change gears having alsobeen properly selected, the machine is ready for operation. Motionderived from the shaft 24 will be simultaneously transmitted to thefriction drive for rotating the drum 1 and to the cam carrier 17. Thedrum 1 will, however, be held from rotation `by the engagement of theguide 44 with one of thev notches 43 excepting during the periodicoperation of the tripl 45. This disengages the guide 44 and as thefriction coupling 31 is in constant rotation it would 'quickly overcomethe inertia of the drum and impart ro-'- tary motion to the same.However, the interval inwhich the guide 44 is withdrawn is so brief thatit will re-engage the nextsucceeding notch 43 and will arrest furthermovementof the drum. In each engagement between the guide 44 and aparticular notch V43v the stepped cam 35 vwill successively raise orlower the frame 2 and the drum 1 mounted thereon and at each step adrilling and tuft setting operation will be performed. The exactlocation of each tuft is determined by the combined action of the guide44 incooperation with the notch 43 and by the cam 58 in cooperation withthe lever 48. Inasmuch, however, as the controlling cams are in the sameposition relative to the cooperating mechanism when the tufts are beingset as when the holes are being drilled, the registrationwill be exactand therefore .a high speed of operation is possible.

For feeding the machine, the attendant successively places the brushbacks in the holders 59 in advance of the point where the operator'66tightens the wedges and to which position the lfloating wedge-61 isfreely movleaaee able. The same attendant `can remove the completedbrushes from apoint beyondor after the operation of the woperator 67where the wedge 64 has been again released. In-` termediate these twopoints the back is held rigid and has its front .face exactly located bycontact with the flanges 60 so thatl there can `be no variation eitherin the `depth of the holes bored or the depth of insertion of Ythe tuftstherein. `This is of great importance :both in' the vjcost of theproduct produced and 4in permitting the operation of the :machine athigh speed. It is equally imd -portant that the holding of the brushnback Ishould be rigid during the operation which is accomplished by theunyielding pressure of thecooper'ating wedges 6l and 64. .A

What I claim as my invention is: 4

li In a brush machine, the combination of la work carrier, a series ofwork holders 'mounted on said carrier adapted for the free insertion ofthe brush, backs therein and the free withdrawal of the brushes whencompleted at spacedpoints vin the cycle, a locating :bearing foraccurately `positioning the front face of the brush back in said holderand means for rigidly clamping and holding the brush backs in saidholders against said face .intermediate said points.A d

backs may be Vfreelyl inserted i and` from :which completed brushesmaybe freely withdrawn at certain points in the cycle, each of saidholders comprising a recessed Vmember hav ing a locating face againstwhich thel front face of the `back bears, a follower forengag-` ing therear face of .the brush back', .and a wedgefor cooperating with saidfollower,- and 'means 'located betweenl said 'pointsy in the cycle foractuating ithe wedges when inl registration' therewith to respectivelyclamp the brush ibacks and-to` 'release ythe same.

A3; In a brush machine, theV combinationy with a work carrier, Vcfaholder comprising a recessed lmember Ifor receiving the 'brush backfandhavinga locating face forv contacting -with the front face of said back,a float-- ing follower avithin saidrecessed member ,fory engaging therear face lof the brush back` and a wedge for actuating said follower torigidly .clamp the brush back between the; samefand-said locatingsurface.

.4. In -a brush machine, the combination with a work carrier, .of a workholder comprising a recessedY memberfor receiving'a brush back providedvwith'a locating surface for engaging the front` face of said back, afloating 4follower in said recessed member for engaging the rear faceofthe brush back and `a wedge for engaging said follower to clamp thebrush back between the same and` said locatingsurface, the adjacentfacesy of .6.51 said wedge and follower being noneparallel.

2. In va brush machine, the combinationof a work carrier, and aseries ofwork holders mounted on said carrier into which brush andcontactingueach other between the ends .of said follower to .jpermitangular adjust.

linger at ldiderent vpoints in the cycle to actu-.Q 1 -2 ate said wedgefor respectively clampingl and releasing the brush back.I

6. In a brush machine, the combination, with a work carrier, of meansfor..inter`V` mittently actuating `the said carrier to adjust the sameinone directionV stepfby-step, fric?- tionalf jdriving means. foractuating, lsaid carrier l1in al. transverse direction, indexed notchedbearings on said carrier, a detent guide for. engaging Vsaid notchedbearings to hold said carrier from movement under the friction drivewhile permittng'stepbyfstepadjustment in the. .transverse direction,.-means` for intermittently disengaging [andA re-'engagingsaid detentguide to :permitfric-` tional movementwofsaid carrier from one notchitovanother, and ,meansfor adjusting saidguide intermediate successivedisengagementsl to vary the `positions of .the carrier .in SaidStep-byestep adjustments. d l,

7. In a brush machine, thefcombination with a rotary work carrier, ofmeans for ing termittentlyV actuating said ,carrier in` an,` axialdirection step by step, constantly opy. erating friction means forplacing a predetermined torque d on. said rotary carrierfindexed notchedbearings onfsaid carrier, ;a;detcntlgllide, `for .engaging r'said.notched bean;

- ings toghold said carrier fromfrotation whilel permittingthestep-byfstep1 axial adjust-ment,-v means fo'r periodicallydisenga'gingvalldfref, engagingsaid detentpguide ,to permita fr tionalrotation of said carrierVv and adj-ustjment thereof fromvonenotchftoanother, and` means for moving said guide intermediate' successivedisengagements Fto' vary the `posi-` tions ofthe carrier in thesuccessive step-'bystep adjustments thereof.t` j f 8. In a brushmachine, the combinationlof a `rotaryvworlr carrierfmeansffor mounting fthe workthereon, means for intermittently actuating said carrier stepgbystep in an axial: direction, constantly operating friction meansfor'vplacing Va torque on saidfcarrier,

a circumferentialfseries of indexed notchedbearings on' said'carrier, adetent -guide forv engaging said notched :bearing to hold'lsaid carrieragainst said/drivingtorque, means for periodically disengaging .andre-engaging said detent guide to'pcimit rotation-of` said carrier fromone notch to another, means for adjusting sald detent guide intermediatesuccessive disengagements thereof to vary the rotative position of saidcarrierin successive step-by-step adjustments, and means forl adjustingthe axis of said carrier whereby Vthe work is adjusted in threetransverse planes.

9. ln a brush machine, the combination of a rotary work carrier, meansfor intermittently actuating said carrier step-by-step in an axialdirection, constantly operating friction means for placing a torquey onsaid cary .rier, a circumferentially extending indexed i a'rec'essedmember for receiving abrush back,- 454 notched .flange on said carrier,a guide detent for successively engaging said notched bearings andextending parallel to the axis of said carrier, means for intermittentlydis- `engaging and re-engaging said guide detent to permit movement ofsaid carrier from one notch to another, and means for moving said guidedetent tangentially of the carrier to change the path of saidstep-by-step adjust- `ment'.

10. In al brush machine, the combination of a rotary drum, anon-rotative member within said drum and carrying the same, a framemember betweenr said non-rotative `member and saidl drum, means on saidframe member permitting axial movement of said 'non-rotative memberwhile restraining the same from rotary movement, a cam carrierrrotatively mounted on said frame member vbelow said drum,- a stepped camon said cam carrier extending upward within said drum, means cooperatingwith said stepped cam for raising and lowering said non-rotative member,and a pluralityof'additional cams on said cam carrier for controllingother move- 40' ments of said drum.

11.'In a brush machine, the combination with a rotary work carrier, of aseries of work'holders on said drum each comprising a locating 'flangeon said recessed member for contacting with the front face ofthe brushback, a floating follower for contacting with the rear face of saidbrushback, a wedge for V5.0., engaging said follower to clamp the brush backbetween the same and said flange, and luid actuated means located atspaced points in the cycle of said carrier for operating said Wedge torespectively clamp and release the brush back. v

12. In a brush machine, the combination with a rotary work carrier, of aseries of work ated means located at spaced points in the cycle of saidcarrier for operating said wedge to respectively clamp and release thebrush back. v

13. In a brush machine, the combination with a rotary work carryingdrum, anonrotative member withinsaid drum for supporting the same, aframe member surrounding said non-rotative member and between the sameand said drum, means on said frame member permitting the axial movementof said non-rotative member thereon while preventing a rotation thereof,a hollow post projecting upward from said non-rotative member axially ofsaid drum, a series of work holders mounted on said rotary drum intowhich .brush backs may be freely inserted and from which completedbrushes may be freely withdrawn at certain points in the cycle, clampingmeans for thel brush backs in said holders, fluid actuated motors foroperating said clamping means to clamp and re- Y lease the brush backs,said motors being supported upon said hollow post an-d supply conduitsfor the Vfluid tol said motors passing through said hollow post.

14. In a brush machine, the combination,

of a rotary drum, a non-rotative member within said drum andcarrying'the same, a frame member between said non-rotative member andsaid drum, means on said frame member permitting axial movement of said;

nom'otativememberwhilerestrainingthesame from rotary movement, a camcarrier .rotatively mounted on said frame member below said drum, astepped cam on said cam carrier extending upward within said drum, meanscooperating with said stepped cam forl raisingand lowering saidnon-rotative member`,a

drive mechanism for rotating said cam car`v rier, mechanism timedtherewith for nonpositively rotating said drum, means for arrestingmovement of said drum', and a cam on said cam carrier forcontrollingsaid arresting means to produce a step-by-step'rotativeadjustment of said drum.

15. In a brush machine,the.combination of a `rotary drum, a non-rotativemember within said drum and carrying the same, a

frame member between said lnon-rotative member and said drum, means onsaid frame member permitting axial movement of said non-rotative memberwhile' restraining vthe same from rotarymovement, a cam carrier f`rotatively mounted on said frame member below said drum, a stepped camon said cam carrier extending upward within said drum, means cooperatingwith said stepped cam for raising and lowering said non-rotative member,a plurality of additional cams on said cam carrier including a camcontrolling said arresting means, and a cam controlling movement of saidframe member.

16. In a brush machine, the combination'of a rotaryv drum, anon-rotativemember within loo said drum and carrying the same, an annular framemember between said non-rotative member and said drum, a stationaryframe member on which said annular frame member is mounted for movementin a direction transverse to the aXis of 'said drum, a cam carrierrotatively mounted on said annular frame member, a stepped cam on saidcam carrier extending upward within said drum,

means cooperating with said stepped cam for raising and lowering saidnon-rotative member, a second cam on said cam carrier, means cooperatingwith said second cam for moving said annular frame and members carriedthereby upon said stationary frame member and means for intermittentlyrotating said drum whereby the latter is movable in three planesrespectively transverse to each other. In testimony whereof I aiiX mysignature.

CONRAD JOBST.

